package com.yff.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class CharactorEncodingFilter implements Filter {
	String encoding;
	@Override
	public void destroy() {
		this.encoding=null;
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		if(encoding==null) {
			encoding="utf-8";
		}
		request.setCharacterEncoding(encoding);
		chain.doFilter(request, response);

	}

	@Override
	public void init(FilterConfig Config) throws ServletException {
		this.encoding=Config.getInitParameter(encoding);

	}

}
